Recent progress of MOF-functionalized nanocomposites: From structure to properties

Advances in Colloid and Interface Science, Journal Year: 2023, Volume and Issue: 323, P. 103050 - 103050

Published: Nov. 10, 2023

Language: Английский

---

Step‐Nucleation In Situ Self‐Repair to Prepare Rollable Large‐Area Ultrathin MOF Membranes

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(48)

Published: Aug. 29, 2023

Ultrathin membranes with ultrahigh permeance and good gas selectivity have the potential to greatly decrease separation process costs, but it requires practical preparation of large area for implementation. Metal-organic frameworks (MOFs) are very attractive membrane applications. However, date, largest MOF reported in literature is only about 100 cm2 . In present study, a new step-nucleation situ self-repair strategy proposed that enables large-area (2400 ) ultrathin rollable deposited on an inexpensive flexible polymer support layer first time, combining polyvinyl alcohol (PVA)-metal-ion pure metal-ion layer. The main role act as nucleation sites growth, while PVA-metal-ion acts slow-release source, which supplements crystal repair any defects occurring. Membrane modules necessary components applications, spiral-wound among most common module formats widely applied separation. A 4800 was successfully prepared, demonstrating implementation membranes.

Language: Английский

---

Roll-to-roll fabrication of large-area metal–organic framework-based membranes for high-performance aqueous separations

Nature Water, Journal Year: 2024, Volume and Issue: 2(2), P. 183 - 192

Published: Jan. 30, 2024

Language: Английский

---

Exfoliation of 2D Metal‐Organic Frameworks: toward Advanced Scalable Materials for Optical Sensing

Small Methods, Journal Year: 2023, Volume and Issue: 7(11)

Published: Sept. 13, 2023

Two-dimensional metal-organic frameworks (MOFs) occupy a special place among the large family of functional 2D materials. Even at monolayer level, MOFs exhibit unique sensing, separation, catalytic, electronic, and conductive properties due to combination porosity organo-inorganic nature. However, lab-to-fab transfer for MOF layers faces challenge their scalability, limited by weak interactions between organic inorganic building blocks. Here, comparing three top-down approaches fabricate (sonication, freeze-thaw, mechanical exfoliation), The technological criteria have established creation thickness up 1 nm with record aspect ratio 2*10^4:1. freezing-thaw exfoliation are most optimal approaches; wherein rate manufacturability rivaling greatest scalability obtained (21300:1 vs 1330:1 ratio), leaving sonication approach behind (with 900:1 ratio) discovered. high quality demonstrate optical sensitivity solvents varied polarity, which opens way scalable freestanding MOF-based atomically thin chemo-optical sensors industry-oriented approach.

Language: Английский

---

Two-Dimensional Sulfonate-Functionalized Metal–Organic Framework Membranes for Efficient Lithium-Ion Sieving

Nano Letters, Journal Year: 2024, Volume and Issue: 24(9), P. 2782 - 2788

Published: Feb. 27, 2024

Two-dimensional (2D) membranes have shown promising potential for ion-selective separation but often suffer from the trade-off between permeability and selectivity. Herein, we report an ultrathin 2D sulfonate-functionalized metal–organic framework (MOF) membrane efficient lithium-ion sieving. The narrow pores with angstrom precision in MOF assist hydrated ions to partially remove hydration shell, according different energies. abundant sulfonate groups channels serve as hopping sites fast transport, contributing a high Li-ion permeability. Then, difference affinity of Li+, Na+, K+, Mg2+ terminal further enhances reported overcomes selectivity opens up new avenue highly permselective membranes.

Language: Английский

---

Gas sensors based on metal-organic frameworks: Challenges and opportunities

Chinese Journal of Structural Chemistry, Journal Year: 2024, Volume and Issue: 43(3), P. 100251 - 100251

Published: Feb. 13, 2024

Language: Английский

---

Recent advances in continuous zirconium-based metal–organic framework membranes for high-precision separation

Separation and Purification Technology, Journal Year: 2024, Volume and Issue: 345, P. 127318 - 127318

Published: March 30, 2024

Language: Английский

---

The effect of different solvents on the formation of large‐area MOF membranes

AIChE Journal, Journal Year: 2024, Volume and Issue: 70(8)

Published: April 10, 2024

Abstract Metal–organic framework (MOF) membranes are widely used in gas separation processes. However, the effect of solvents on formation large‐area MOF membranes, which directly influences performance, has rarely been investigated. In this study, three (methanol, ethanol, and water) were selected to systematically investigate their effects zeolite imidazolium frameworks (ZIF) membrane via experimental validation simulations. The results indicated that solvent selection influenced crystallization rate, crystal size, ZIF‐8 ability. Particularly, when water was as a solvent, slow nucleation crystals observed, resulting more complete structure thinner membrane. Therefore, exhibited permeance 10,000 permeation unit enhanced CO 2 /N selectivity. Furthermore, with surface area 2400 cm spiral‐wound modules developed, paving way for large‐scale industrial production.

Language: Английский

---

MXene-based membranes in water treatment: Current status and future prospects

Separation and Purification Technology, Journal Year: 2023, Volume and Issue: 331, P. 125640 - 125640

Published: Nov. 7, 2023

Language: Английский

---

Integration of devices based on metal–organic frameworks: A promising platform for chemical sensing

Coordination Chemistry Reviews, Journal Year: 2024, Volume and Issue: 518, P. 216067 - 216067

Published: July 15, 2024

Language: Английский

---